研けん磨ま

noun, noun or participle which takes 'suru', transitive verb

grinding; polishing

Physical process of smoothing, shining, or shaping a surface by abrasion. Used for metals, lenses, gemstones, and similar materials.

• レンズを研けん磨まする作さ業ぎょうはとても繊せん細さいだ。

  The work of grinding lenses is very delicate.

• この宝ほう石せきは研けん磨まされて輝かがやきが増ました。

  This gemstone was polished and its brilliance increased.

noun, noun or participle which takes 'suru', transitive verb

refining; polishing (skills); disciplining oneself

Metaphorical extension: improving a skill, knowledge, or character through dedicated effort. Often used with words like 技術, 腕, 人格, or 知識.

• 彼かれは毎まい日にち練れん習しゅうして技ぎ術じゅつを研けん磨ましている。

  He practices every day to refine his skills.

• 留りゅう学がく中ちゅうに語ご学がく力りょくを研けん磨まするつもりだ。

  I intend to polish my language ability while studying abroad.